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MP4 video files have out of sync audio?

Jan 6, 2012 1:41 AM

Tags: #help #video #out #pro #audio #premiere #of #sync #mp4

When I import an MP4 video into Premiere Pro CS5.5, I noticed that while playing it the audio gradually becomes out of sync. I am unsure as to what causes this, but when I play the exact same video in an external player (like VLC) the audio is fine.


I've tried using Audition to export the audio from the video as a WAV file, but upon importing that into PP CS5.5, I discovered that it becomes much worse.


I'm not sure at this point if the audio is the issue or the video is the issue, but I'd really like an answer.


Audio settings are at 48 kHz for the audio itself and the sequence in Premiere Pro.



  • Currently Being Moderated
    Jan 6, 2012 9:10 AM   in reply to EricIsMe

    Read Bill Hunt on a file type as WRAPPER

    What is a CODEC... a Primer

    What CODEC is INSIDE that file?


    Report back with the codec details of your file, use the programs below... a screen shot works well to SHOW people what you are doing


    For PC or

    For Mac

    . n-render-bars.html


    Once you know exactly what it is you are editing, report back with that information... and your project setting, and if there is a red line above the video in the timeline, which indicates a mismatch between video and project


    Also, See 2nd post for picture of NEW ITEM process

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  • Currently Being Moderated
    Jan 6, 2012 8:05 PM   in reply to EricIsMe

    video from my PVR (where I got the original video)


    You're really not allowed to edit that.  If you stick with original media you shot yourself using a supported camera format, you should have better results.

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  • Currently Being Moderated
    Jan 25, 2012 11:49 PM   in reply to EricIsMe

    Audio out of sync when importing into Premiere Pro CS5.5


    We had this same problem, it appears that Premiere Pro cannot handle High Definition footage that is any longer than 4 mins, as that is the time that the audio always goes out of sync.


    We have solved this (after many long hours of scouring forum pages etc) By converting the proposed clip to be imported, to .wmv in a converter software, we are using a free avi. Converter software and this works fine.  Once converted to .wmv you can import without any out of sync audio problems.

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  • Currently Being Moderated
    Jan 26, 2012 8:21 AM   in reply to EricIsMe

    Same question as before... what are the DETAILS of the video inside that AVI file?


    I could save a Word document as myfile.avi but that does not mean it would edit in PPro


    Does the recorder vendor offer editing software for their files?

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  • Currently Being Moderated
    Mar 11, 2012 11:51 AM   in reply to EricIsMe

    I have the same audio sync issue with 720p footage from my Galaxy Nexus phone.  My current workaround is to use Quicktime Pro to output an un-compressed mov file and import that into Premiere.  Big file, but sync'ed audio.

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